First pull up settings app. Then change the date by one day go back to your extreme road trip 2 and it will show that you have 1 frenzy run to spend. Keep on doing that until you get as many bucks as you please. But don't change the date by to days because you can only do it one at a time once you finish the frenzy run just go and change it one more day and do that over and over.
Go to menu select free crates watch the video and when it's done click the button on the top right corner and watch the same video again and again and as many times you want then once you are done get out of the video and say you watched it 10 times then you get 10 crates!!!
At the title screen, press " Free Crates" and wait for the video to stream. When it's fully streamed and playing, skip to the end of the video and the game will think you watched the whole thing. Repeat this for as many cates as desired. Enjoy!
At the 'Main' menu press the button that is marked 'Free Crate' and watch the adverts to pick up more coins. You can keep doing this until you get the desired amont of coins. You can also connect with friends via Facebook to get coins.
At the start of every trip you are given a limited amount of fuel in your tank but more gasoline can be added to it by picking up the red fuel canisters which are littered along the road and by trying to balance your massive jumps with slamming down so you get more gas quickly.